package com.nowcoder.community.controller;
import com.nowcoder.community.dao.DiscussPostMapper;
import com.nowcoder.community.dao.elasticsearch.DiscussPostRepository;
import com.nowcoder.community.entity.*;
import com.nowcoder.community.event.EventConsumer;
import com.nowcoder.community.event.EventProducer;
import com.nowcoder.community.service.CommentService;
import com.nowcoder.community.service.DiscussPostService;
import com.nowcoder.community.service.LikeService;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.HostHolder;
import com.nowcoder.community.util.RedisKeyUtil;
import com.nowcoder.community.util.XaCommunityConstant;
import com.nowcoder.community.util.XaCommunityUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.ObjectError;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.*;
@Controller
@RequestMapping("/discuss")
public class DiscussPostController implements XaCommunityConstant {
    private static final Logger logger = LoggerFactory.getLogger(EventConsumer.class);
    @Resource
    private DiscussPostService discussPostService;
    @Resource
    private CommentService commentService;
    @Resource
    private HostHolder hostHolder;
    @Resource
    private UserService userService;
    @Resource
    private LikeService likeService;
    @Resource
    private EventProducer eventProducer;
    @Resource 
    private DiscussPostRepository discussRepository;
    @Resource
    private DiscussPostMapper discussMapper;
    @Resource
    private RedisTemplate redisTemplate;
    @PostMapping("/add")
    @ResponseBody
    public String addDiscussPost(String title,String content){
        //1.获取本线程用户
        User user=hostHolder.getUser();

        //2.无用户信息则跳转登录页面
        if(user==null){
            return XaCommunityUtil.getJSONString(403,"您还未登录噢");
        }

        //3.创建帖子对象，给帖子对象设置属性
        DiscussPost post=new DiscussPost();
        
        post.setUserId(user.getId());
        post.setTitle(title);
        post.setContent(content);
        post.setCreateTime(new Date());
        //上面的代码有可能出错，处理出错的逻辑以后统一写
        discussPostService.addDiscussPost(post);

        logger.info("postId"+post.getId());
        // 触发发帖事件
        Event event = new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(user.getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(post.getId());
        eventProducer.fireEvent(event);

        // 计算帖子分数--添加到set队列中，等到将来定时任务到缓存中进行
        
        String redisKey= RedisKeyUtil.getPostScoreKey();
        redisTemplate.opsForSet().add(redisKey,post.getId());
        return XaCommunityUtil.getJSONString(0,"发送成功！！");
    }
    
    @GetMapping("/detail/{discussPostId}")
    public String getDiscussPost(@PathVariable("discussPostId") int discussPostId, Model model, Page page) {
        // 帖子
        DiscussPost post = discussPostService.findDiscussPostById(discussPostId);
        model.addAttribute("post", post);
        // 作者
        User user = userService.findUserById(post.getUserId());
        model.addAttribute("user", user);
        // 点赞数量
        long likeCount= likeService.findEntityLikeCount(ENTITY_TYPE_POST,discussPostId);
        model.addAttribute("likeCount",likeCount);
        // 点赞状态
        int likeStatus=hostHolder.getUser()==null ? 0 :
                likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_POST,discussPostId);
        model.addAttribute("likeStatus",likeStatus);
        
        // 评论分页信息
        page.setLimit(5);
        page.setPath("/discuss/detail/" + discussPostId);
        page.setRows(post.getCommentCount());

        // 评论: 给帖子的评论
        // 回复: 给评论的评论
        // 评论列表
        List<Comment> commentList = commentService.findCommentsByEntity(
                ENTITY_TYPE_POST, post.getId(), page.getOffset(), page.getLimit());
        // 评论VO列表
        List<Map<String, Object>> commentVoList = new ArrayList<>();
        if (commentList != null) {
            for (Comment comment : commentList) {
                // 评论VO
                Map<String, Object> commentVo = new HashMap<>();
                // 评论
                commentVo.put("comment", comment);
                // 作者
                commentVo.put("user", userService.findUserById(comment.getUserId()));
                // 点赞数量
                likeCount= likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT,comment.getId());
                commentVo.put("likeCount",likeCount);
                // 点赞状态
                likeStatus=hostHolder.getUser()==null ? 0 :
                        likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_COMMENT,comment.getId());
                commentVo.put("likeStatus",likeStatus);
                
                // 回复列表
                List<Comment> replyList = commentService.findCommentsByEntity(
                        ENTITY_TYPE_COMMENT, comment.getId(), 0, Integer.MAX_VALUE);
                // 回复VO列表
                List<Map<String, Object>> replyVoList = new ArrayList<>();
                if (replyList != null) {
                    for (Comment reply : replyList) {
                        Map<String, Object> replyVo = new HashMap<>();
                        // 回复
                        replyVo.put("reply", reply);
                        // 作者
                        replyVo.put("user", userService.findUserById(reply.getUserId()));
                        // 回复目标
                        User target = reply.getTargetId() == 0 ? null : userService.findUserById(reply.getTargetId());
                        replyVo.put("target", target);
                        //点赞数量
                        likeCount= likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT,reply.getId());
                        replyVo.put("likeCount",likeCount);
                        // 点赞状态
                        likeStatus=hostHolder.getUser()==null ? 0 :
                                likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_COMMENT,reply.getId());
                        replyVo.put("likeStatus",likeStatus);

                        
                        replyVoList.add(replyVo);
                    }
                }
                commentVo.put("replys", replyVoList);

                // 回复数量
                int replyCount = commentService.findCommentCount(ENTITY_TYPE_COMMENT, comment.getId());
                commentVo.put("replyCount", replyCount);
                commentVoList.add(commentVo);
            }
        }
        model.addAttribute("comments", commentVoList);
        return "/site/discuss-detail";
    }
    //获取帖子--贴子有作者有内容，有评论，评论也有之间的评论

    // 置顶
    @PostMapping("/top")
    @ResponseBody
    public String setTop(int id){
        discussPostService.updateType(id,1);
        Event event=new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);
        return XaCommunityUtil.getJSONString(0);
    }
    // 加精
    @PostMapping("/wonderful")
    @ResponseBody
    public String setWonderful(int id){
        discussPostService.updateStatus(id,1);
        // 触发发帖事件
        Event event=new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);

        // 计算帖子分数
        String redisKey=RedisKeyUtil.getPostScoreKey();
        redisTemplate.opsForSet().add(redisKey,id);
        return XaCommunityUtil.getJSONString(0);
    }
    // 删除
    @PostMapping("/delete")
    @ResponseBody
    public String setDelete(int id){
        discussPostService.updateStatus(id,2);
        // 触发发帖事件
        Event event=new Event()
                .setTopic(TOPIC_DELETE)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);
        return XaCommunityUtil.getJSONString(0);
    }
}
